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JPL Small-Body Database Browser
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441821 (2009 OW12)
Classification: Main-belt Asteroid          SPK-ID: 2441821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .292422727772101 8.0773e-08  
a 3.193105216905597 5.2497e-08 au
q 2.259368679314736 2.5846e-07 au
i 21.13386426964007 1.1994e-05 deg
node 298.376712447242 3.1931e-05 deg
peri 116.7823474508472 5.7312e-05 deg
M 199.4098668642703 3.8774e-05 deg
tp 2459530.182440528643
(2021-Nov-11.68244053)
0.00022989 TDB
period 2084.098643267439
5.71
5.1396e-05
1.407e-07
d
yr
n .172736545442779 4.2599e-09 deg/d
Q 4.126841754496457 6.7849e-08 au
  Orbit Determination Parameters
   # obs. used (total)      197  
   data-arc span      6752 days (18.49 yr)  
   first obs. used      1998-09-23  
   last obs. used      2017-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60932  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:34:38  

Additional Information
 Earth MOID = 1.35316 au 
 Jupiter MOID = 1.59114 au 
 T_jup = 3.027 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO397575  
diameter diameter 4.492 km 1.202 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.042   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

441821 (2009 OW12)          Discovered 2009-Jul-27 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2009 OW12 = 1998 SL27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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